Teshing for hydrogen gas

Aim: to show that hydrogen gas is produced when a piece of metal reacts with acid
Equipment: A test tube, a boiling tube, bunsen burner, wooden splint, a bottle of acid a piece of metal, saftey glasses, a lab partner
Method:1: light you bunsen burner 2: add your sample of metal3: carefully invert the boiling tube above the test tube 4:hold tubes together for few minutes 5:when you think the tube is full get your lab partner to light wooden splint 6: carefuly, but quickly tilt the boiling tube of gas up wards and insert the wooden splint in to the mouth of the test tube
Results:made high pitch pop and the acid heated up and made dense smoke
Discusion:Well when we started and put the acid and metal together it started fizzing up because of the chemical reaction of metal and acid. And when we had captured all of the hydrogen in the top that the metal, acid reaction made, and then brought fire to it, it made a screeching sound and that cause of that was the Hydrogen reacting with the oxygen around it when we brought heat into the mix.
Concusion: it worked

Metal drill gauge

Neutralisation

Neutralisation

Aim:
To Observe A Neutralization reaction.

Equipment: A test tube, Test tube rack, A base, an acid, Dropper, Universal indicator.

Method:
1. Add approximately 1-2mL of Sodium carbonate and place the test tube into the test tube rack. Add 3-5 drops of universal indicator solution.

2. Using a dropper add HCI drop by drop. be careful because adding even a small amount of extra acid can mean you'll miss the neutralization point.

Results and Observations:
When we added the universal indicator it changed colour to the blue for the base, and when we slowly added more and more acid it slowly changed to a green colour. we added to much so it went to yellow then orange but we recovered it with more base to make a green.

Discussion: With this as it was changing colours we could tell if we needed to add more of either the base or acid to be able to neutralize it. as we added it drop by drop we slowly saw it starting to mix but it stayed mostly separate because of the different density's of the solutions.  We tapped the test tube to help speed up that mixing process but it looked cool while doing it. When the solution in the test tube is blue it means it is highly concentrated with a base and with a red it is highly concentrated with the acid and when it is green it means it is 50/50 or close enough of a balance so it is sitting at a neutral point. Neutralization is when a solution is in between being to acidic and being a base. So neutralization is finding that mid point in between them both.

Conclusion: For this ours worked well and we were able to neutralize it.

pH testing

AIM:to test the pH range of household chemicals

Equipment: a variety of household chemicals, spotting tile, red litmus paper, blue litmus paper, Universal indicator soloution, safety glasses.

Method: 1:add a few drops of each chemical to a spot on your spotting tile. if a subtance is solid or powdered you will need to add a few drops of water before testing it.
2:test the chemicals with the blue and red litmus paper.
3. Test each chemical with a few drops of universal indicator.

Results:

Chemical being tested	Colour in blue litmus paper	Colour in red litmus paper	Colour in Universal indicator
Toliet cleaner	It went red	It stayed red	It went Red
Dish soap	It went red	It stayed red	It went Yellow
Spray n Wipe	It went dark Blue	It went blue	It went Blue
Baking soda	Forgot to add water	Forgot to add water	It went Blue

Disscusion:So back we did this experiment we got everything we needed and we got to work. After it was all set up we got to add the indicator into one of each of the little half spheres to tell us what the pH level was. In the next row of treys we added blue litmus paper and if it went red it means its an acid and if it stayed blue it is either a base or a neutral substance. The final one we added red litmus paper and it is the same as the blue but in reverse. With the universal indicator the more red it goes it means the stronger an acid and the more blue - violet it goes it means the stronger the base it is.

Conclusion

Chemical being tested	acid or base	evidence
Toilet cleaner	Acid	all the test it went red
Dish soap	Acid	all the test it went red  apart from the U.I it went yellow
Spray n Wipe	Base	all the test it went Blue
Baking soda	Base	all the test it went Blue

migration

Link
Migration is the process of people temporarily or permanent moving from one place or another.

atom structre

in science we made the structure of an atom

disscussion i made structure for a carbon atom it has a atomic number of 6 and a mass of 12 so 6 electrons 6 protons and 6 neutrons

you either need to add or remove 4 electrons so it has a -4 charge if you add four electrons

concusion it work and no i would not change any thing